Pidong in context: Street-network sprawl trends

Pidong in context

3.244.85.6<19751976–19901991–20052006–2020SNDi of street additions
3.244.85.6<19751976–19901991–20052006–2020SNDi of entire street network
PidongAnhui (Region)China (Country)

The chart above shows SNDi trends for new street additions (left panel) and the entire network (right panel), with Pidong plotted against Anhui and China. All three follow the same trend in new construction, suggesting a shared regional pattern of development. Most recently, Pidong's incremental SNDi rose from 4.04 to 4.44 between 1991-2005 and 2006-2020. In terms of the aggregate network, Pidong ranked 68th out of 74 cities in Anhui and 1630th out of 1843 in China as of 2020.

New Street Additions (2006–2020)

SNDi value
4.44
Rank in China
1520th of 1843
Rank in Anhui
64th of 74

Entire Network (Aggregate)

SNDi value
4.33
Rank in China
1630th of 1843
Rank in Anhui
68th of 74

Rankings go from most connected to most disconnected — rank 1 is the most connected.

What about similarly populated cities?

23456<19751976–19901991–20052006–2020SNDi of street additions
23456<19751976–19901991–20052006–2020SNDi of entire street network
PidongBarra BonitaEl Milia

In new street additions, Pidong and Barra Bonita both fluctuated in its street-construction patterns, while El Milia built increasingly disconnected streets from 1975 through 1991-2005, then improved. Looking at the full network, Barra Bonita and El Milia both became progressively more disconnected, while Pidong fluctuated in connectivity. Notably, Pidong had a more connected network than El Milia in 1975 but the two have since reversed their relative ranking.